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105.1 CTS A GRADE RAINBOW OBSIDIUM SLAB [F5733 ]
- 存貨單位
- 尺寸(毫米)
- 52.000 x 40.000 x 7.000mm
- 重量 (cts)
- 105.100
- 類型
- Rough
- 顏色
-
QUALITY ROUGH
A GRADE OBSIDIUM SLAB
This is a piece we cut off a rough specimen at app 45 degree angle to expose the amazing patterns.Great cutting experience.We have taken the photo with the rough wet.
General | |
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Category | Volcanic glass |
Formula (repeating unit) | 70–75% SiO2, plus MgO, Fe3O4 |
Identification | |
Color | Deep black or blackish green |
Fracture | Conchoidal |
Mohs scale hardness | 5–6[1] |
Luster | Vitreous |
Specific gravity | ~2.4[2] |
Optical properties | Translucent |
References | [3] |
Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock.
It is produced when felsic lava extruded from a volcano cools rapidly with minimum crystal growth. Obsidian is commonly found within the margins of rhyolitic lava flows known as obsidian flows, where the chemical composition (high silica content) induces a high viscosity and polymerization degree of the lava. The inhibition of atomic diffusion through this highly viscous and polymerized lava explains the lack of crystal growth. Obsidian is hard and brittle; it therefore fractures with very sharp edges, which were used in the past in cutting and piercing tools, and has been used experimentally as surgical scalpel blades. It may contain patterns of gas bubbles remaining from the lava flow, aligned along layers created as the molten rock was flowing before being cooled. These bubbles can produce interesting effects such as a golden sheen (sheen obsidian). An iridescent, rainbow-like sheen (rainbow obsidian) is caused by inclusions of magnetite nanoparticles
- 存貨單位
- 尺寸(毫米)
- 52.000 x 40.000 x 7.000 mm
- 重量 (cts)
- 105.100
- 類型
- Rough
- 顏色
-
QUALITY ROUGH
A GRADE OBSIDIUM SLAB
This is a piece we cut off a rough specimen at app 45 degree angle to expose the amazing patterns.Great cutting experience.We have taken the photo with the rough wet.
General | |
---|---|
Category | Volcanic glass |
Formula (repeating unit) | 70–75% SiO2, plus MgO, Fe3O4 |
Identification | |
Color | Deep black or blackish green |
Fracture | Conchoidal |
Mohs scale hardness | 5–6[1] |
Luster | Vitreous |
Specific gravity | ~2.4[2] |
Optical properties | Translucent |
References | [3] |
Obsidian is a naturally occurring volcanic glass formed as an extrusive igneous rock.
It is produced when felsic lava extruded from a volcano cools rapidly with minimum crystal growth. Obsidian is commonly found within the margins of rhyolitic lava flows known as obsidian flows, where the chemical composition (high silica content) induces a high viscosity and polymerization degree of the lava. The inhibition of atomic diffusion through this highly viscous and polymerized lava explains the lack of crystal growth. Obsidian is hard and brittle; it therefore fractures with very sharp edges, which were used in the past in cutting and piercing tools, and has been used experimentally as surgical scalpel blades. It may contain patterns of gas bubbles remaining from the lava flow, aligned along layers created as the molten rock was flowing before being cooled. These bubbles can produce interesting effects such as a golden sheen (sheen obsidian). An iridescent, rainbow-like sheen (rainbow obsidian) is caused by inclusions of magnetite nanoparticles
運輸商 | 運送至:國家 | 運送到世界其他地區 |
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FedEx | $12.00 / :幾天天 | $39.00 / :幾天天 |
:國家
FedEx 對包含 2 或更多商品的訂單折扣為 $12.00
世界其他地區
FedEx 對包含 2 或更多商品的訂單折扣為 $39.00
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Registered Shipping | $9.00 / :幾天天 | $16.00 / :幾天天 |
:國家
Registered Shipping 對包含 2 或更多商品的訂單折扣為 $9.00
世界其他地區
Registered Shipping 對包含 2 或更多商品的訂單折扣為 $16.00
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積極的
Pleased with slab and delivery
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積極的
Paid and shipped - no feedback left after 100 days
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積極的
Paid and shipped - no feedback left after 100 days
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積極的
Paid and shipped - no feedback left after 100 days
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積極的
A+ seller great looking piece
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積極的
Paid and shipped - no feedback left after 100 days
為什麼用戶出價高於自己?
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當出現“自動出價”圖標時,表示我們的系統正在根據用戶的最高出價主動為用戶出價。這可能看起來好像用戶出價高於自己,但這只是系統更新出價以反映用戶最高限額的結果。